BeanWrapper (Spring Framework 5.2.12.RELEASE API)

所有超级接口:
ConfigurablePropertyAccessor, PropertyAccessor, PropertyEditorRegistry, TypeConverter
所有已知实现类:
BeanWrapperImpl
```
public interface BeanWrapper
extends ConfigurablePropertyAccessor
```
The central interface of Spring's low-level JavaBeans infrastructure.
Typically not used directly but rather implicitly via a BeanFactory or a DataBinder.
Provides operations to analyze and manipulate standard JavaBeans: the ability to get and set property values (individually or in bulk), get property descriptors, and query the readability/writability of properties.
This interface supports nested properties enabling the setting of properties on subproperties to an unlimited depth.
A BeanWrapper's default for the "extractOldValueForEditor" setting is "false", to avoid side effects caused by getter method invocations. Turn this to "true" to expose present property values to custom editors.
从以下版本开始:
13 April 2001
作者:
Rod Johnson, Juergen Hoeller
另请参阅:
PropertyAccessor, PropertyEditorRegistry, PropertyAccessorFactory.forBeanPropertyAccess(java.lang.Object), BeanFactory, BeanPropertyBindingResult, DataBinder.initBeanPropertyAccess()

字段概要
- 从接口继承的字段 org.springframework.beans.PropertyAccessor
  NESTED_PROPERTY_SEPARATOR, NESTED_PROPERTY_SEPARATOR_CHAR, PROPERTY_KEY_PREFIX, PROPERTY_KEY_PREFIX_CHAR, PROPERTY_KEY_SUFFIX, PROPERTY_KEY_SUFFIX_CHAR

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`int`	`getAutoGrowCollectionLimit()`	Return the limit for array and collection auto-growing.
`PropertyDescriptor`	`getPropertyDescriptor(String propertyName)`	Obtain the property descriptor for a specific property of the wrapped object.
`PropertyDescriptor[]`	`getPropertyDescriptors()`	Obtain the PropertyDescriptors for the wrapped object (as determined by standard JavaBeans introspection).
`Class<?>`	`getWrappedClass()`	Return the type of the wrapped bean instance.
`Object`	`getWrappedInstance()`	Return the bean instance wrapped by this object.
`void`	`setAutoGrowCollectionLimit(int autoGrowCollectionLimit)`	Specify a limit for array and collection auto-growing.

从接口继承的方法 org.springframework.beans.ConfigurablePropertyAccessor
getConversionService, isAutoGrowNestedPaths, isExtractOldValueForEditor, setAutoGrowNestedPaths, setConversionService, setExtractOldValueForEditor

从接口继承的方法 org.springframework.beans.PropertyAccessor
getPropertyType, getPropertyTypeDescriptor, getPropertyValue, isReadableProperty, isWritableProperty, setPropertyValue, setPropertyValue, setPropertyValues, setPropertyValues, setPropertyValues, setPropertyValues

从接口继承的方法 org.springframework.beans.PropertyEditorRegistry
findCustomEditor, registerCustomEditor, registerCustomEditor

从接口继承的方法 org.springframework.beans.TypeConverter
convertIfNecessary, convertIfNecessary, convertIfNecessary, convertIfNecessary

- 方法详细资料
  - setAutoGrowCollectionLimit
```
void setAutoGrowCollectionLimit(int autoGrowCollectionLimit)
```
    Specify a limit for array and collection auto-growing.
    Default is unlimited on a plain BeanWrapper.
    从以下版本开始:
    4.1
  - getAutoGrowCollectionLimit
```
int getAutoGrowCollectionLimit()
```
    Return the limit for array and collection auto-growing.
    从以下版本开始:
    4.1
  - getWrappedInstance
```
Object getWrappedInstance()
```
    Return the bean instance wrapped by this object.
  - getWrappedClass
```
Class<?> getWrappedClass()
```
    Return the type of the wrapped bean instance.
  - getPropertyDescriptors
```
PropertyDescriptor[] getPropertyDescriptors()
```
    Obtain the PropertyDescriptors for the wrapped object (as determined by standard JavaBeans introspection).
    返回:
    the PropertyDescriptors for the wrapped object
  - getPropertyDescriptor
```
PropertyDescriptor getPropertyDescriptor(String propertyName)
                                  throws InvalidPropertyException
```
    Obtain the property descriptor for a specific property of the wrapped object.
    参数:
    propertyName - the property to obtain the descriptor for (may be a nested path, but no indexed/mapped property)
    返回:
    the property descriptor for the specified property
    抛出:
    InvalidPropertyException - if there is no such property